Your previous post didn't seem to be much of a problem to me.
I though it was more a result of an average mistake, but this seems to be something else.
Can you, again, send me a screenshot of the simulation, in PM to me?

To replicate the bug, load an api for the defender like this one
sr-en-136-62f46aabc6de934666c12705ed8064306e3bb397
then check the box for large shield, then load the api again. It will include the large shield even though its not part of the api.

I run into this issue constantly when loading multiple APIs from different scans/players.
The workaround seems to be to uncheck both dome boxes before loading the next api.

Is it possible to add tactical retreat to this as well? For example, if my fleet is greater than 5:1 ratio, its a pretty safe bet that the fleet will retreat and I will only go up against defenses. So what I really need to know is how my fleet will do against defenses, not fleet and defenses.

Current workaround is to load up my fleet and the defender api. Then see if tactical retreat will be in effect and if it is, then manually delete just the fleet part from the defender. Now I can calculate how my fleet will do against defenses only.

@swizzor
The ACS problem should be fixed in the next update
Can you test it again when it's released?

@DrBlink
The Dome problem will also be fixed in the next update.
As for the tactical retreat problem:
I do not fully understand what you want, but I was already planning on adding a live tactical retreat ratio.
Is that what you're looking for?

I was looking for the defender's fleet to be ignored in the simulation if they will tactically retreat.
I use this simulator primarily for raiding so its important to know how many cargos/ships i need to send but since the sim includes the defender's fleet even though they will tactically retreat, it leads me to send more ships than I need to.